Method for manufacturing nano-copper

A manufacturing method and nano-copper technology, which are applied in the manufacture of nano-copper and the preparation of copper ultra-fine particles, can solve the problems of unfavorable environment and safety, incapable of continuous production, etc., and achieve the advantages of environmental protection, short production cycle and good safety. Effect

Inactive Publication Date: 2004-12-29
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of nanomaterials by irradiation chemical technology is a relatively new method. At present, the gamma ray radiation method is widely used, which uses cobalt 60 The γ-ray irradiation reaction system released by Co isotope to obtain nanomaterials has some disadvantages: one, 60 Co isotopes are radioactive substances, and when they cannot be utilized, they will become radioactive waste, which is harmful to the environment and safety; second, the preparation of nanomaterials with gamma rays is often intermittent and cannot be produced continuously
Judging from the current situation, there are no other suitable radiation sources to prepare nanomaterials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment one: the specific preparation steps of this embodiment are as follows:

[0017] a. First, weigh a certain amount of copper sulfate with FA1004 upper dish electronic balance, dissolve it in distilled water, so that the concentration of copper ions reaches 0.008mol / 100ml; then add the hydrophilic surfactant polyvinyl alcohol (PVA), the addition is 0.5 gram / 100ml; After stirring evenly, add the oxidative free radical OH free radical scavenger isopropanol (IPA), the addition is 20ml / 100ml; Then the solution is packed in a specific container, And flush into nitrogen for half an hour, then seal the container and wait for irradiation;

[0018] b. the colloidal solution prepared above is irradiated under the radiation of the electron beam produced by the 2.5Mev, 40mA denamitron electron accelerator, and its irradiation dose is 20Mrad;

[0019] c. Then wash the irradiated sample with absolute alcohol, and centrifuge it in a high-speed centrifuge, and repeat it severa...

Embodiment 2

[0026] Embodiment two: the specific preparation steps of this embodiment are as follows:

[0027] a. First, weigh a certain amount of copper sulfate with FA1004 upper dish electronic balance, dissolve it in distilled water, so that the concentration of copper ions reaches 0.01mol / 100ml; then add the hydrophilic surfactant polyvinyl alcohol (PVA), the addition is 1 gram / 100ml; After stirring evenly, add oxidative free radical OH radical scavenger isopropanol (IPA), the addition is 25ml / 100ml; Then the solution is packed in a specific container, And flush into nitrogen for half an hour, then seal the container and wait for irradiation;

[0028] b. The colloidal solution prepared above is irradiated under the radiation of the electron beam produced by the 2.5Mev, 40mA denamitron electron accelerator, and the irradiation dose is 40Mrad;

[0029] c. Then wash the irradiated sample with absolute alcohol, and centrifuge it in a high-speed centrifuge, and repeat it several times to r...

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Abstract

The present invention is nano copper preparing process and belongs to the field of nano material preparing technology in radiochemistry. The technological process includes adopting copper sulfate as copper source, isopropanol as oxidant clearer in water solution, hydrophilic suitable for PVA for controlling the crystal kernel growth speed and grain size and electronic accelerator to produce electron beam for irradiation treatment; washing irradiated solution, centrifugal separation and stoving to obtain claret nano copper powder. The present invention has simple technological process, short production period, no pollution and high safety.

Description

technical field [0001] The invention relates to a method for manufacturing nanometer copper, that is, a method for preparing copper ultrafine particles, and belongs to the technical field of radiation chemistry manufacturing nanometer materials. Background technique [0002] Copper is one of the earliest metals discovered and used by humans. Copper and copper alloys are widely used in the electrical industry, machinery, building materials and transportation manufacturing industries, etc., which mainly rely on the good electrical, thermal and mechanical properties of copper. Nano-copper powder has broad application prospects in the production of high-grade lubricants, conductive adhesives, and clean energy catalytic materials. [0003] There are many methods for preparing nano-copper, such as laser gas phase synthesis, plasma method, sol-gel method, mechanochemical method, etc., but the method of preparing nano-copper is more active or liquid phase reduction method, in some l...

Claims

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Application Information

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IPC IPC(8): B22F9/30
Inventor 周瑞敏辛立辉
Owner SHANGHAI UNIV
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